 <div id="fgt_pwd">
    <div class="top_area">
        <div class="form_component radius">
            <label class="border bgColor00ac7f">手机号</label>
            <div class="ipt_area">
                <input class="white_border placeholder_text_999999" type="tel" placeholder="请填手机号" maxlength="11" ng-model="mobileNo">
            </div>
        </div>
        <div class="verification_code">
            <div class="form_component radius">
                <label class="border bgColor00ac7f">验证码</label>
                <div class="ipt_area">
                    <input class="white_border placeholder_text_999999" type="tel" placeholder="输入验证码" maxlength='6' ng-model='authCode'>
                </div>
            </div>
           <!-- 加上 bt_disabled 切换两个按钮显示状态 -->
            <div class="button" ng-class='{"bt_disabled": isbt_disabled}'>
                <!-- 加上 active 可点击 -->
                <button class="bt1" ng-click="getAuthCode()" ng-class='{"active": isClick}'>点击获取验证码</button>
                <button class="bt2">获取验证码({{countdown}}s)</button>
            </div>
        </div>
    </div>
    <div class="bottom_area">
        <!-- 加上 active 有效 -->
        <button class="next" ng-class='{"active": isactive}' ng-click='goNext()'>登录</button>
    </div>
</div>